Feed-water grease-extractor apparatus



May 6 1924.

' H. C. DAVIS FEED WATER GREASE EXTRACTOR APPARATUS I Filed Sept. 151920 '2'Sheets1Sheet ma a 4 w J M Willi/,6 $2M,

W/ TNESSES A TTOR/VEY.

May 6, 1924. I 1,492,780

. H. C. 'DAVIS FEED WATER GREASE EXTRACTOR APPARATUS Filed Sept. 15,1920 2 Sheets-Sheet 2 WITNESSES ATTORNEY,

Patented May 6, 1924.

UNITE STATES l TiENT OFFICE.

HOWARD 0. Davis, on ELIZABETH, NEW ERSEY, ASSIGNOR To Rowe DAVIS, EN

emnnns, me, on NEW YORK, N. Y., ,A CORPORATION ornELAwAaE.

FEED-WATER GRE sE- XTRA TQR APPARATUS.

Application filed September 15,1920. "Serial a... 410,513.:

To all whom it may concern:

Be it known that I, HOWARD C. DAVIS, a'

citizen of the UnitedStates, anda resident of Elizabeth, in the countyof Union and" It is usual on tank steamers, so called,

or oil-carrying vessels, to keep the oil inthe tanks at a reasonablywarm temperature by means of heater coils placed in the tanks and intoand through which coils the exhaust steam from the engines or othersource is caused to flow. The exhaust steam and water of condensationflowing through the heater coils become impregnated with oil or greasedue to leakage or other defects in the pipes or their joints andrendered, for

that reason, unsuitable for use as feed-water for the engine boilers. I7

One of the main objects of this invention is to extract the grease oroil from the water resulting from the steam employed in the aforesaidheater coils, so that said water may be properly used as feed-water. orfor other purpose. My invention involves the provision of apparatus intowhich the return from the aforesaid heater coils is piped and withinwhich the grease is efiectually extracted or removed from the water ofcondensation by mechanical means constituting portions of saidapparatus, all exhaust vapor entering said apparatus being confrom thesurface of the water in one of said compartments and a special filter inthe adjacent compartment through which the water flows by gravity to asuitable discharge and which completes the removal of the grease fromthe water. I

' densed therein preparatory to the removal in said compartment. fitted,for the filter-compartment 14, with a gauge glass 27, whose reading willindicate The apparatus of my invention involves) novel features ofconstructlon, arrangement and combinations'of parts, and said 1nventionwill be. fully understood from the detailed description hereinafterpresented, reference being had tothe accompanyingdrawings, in which: Y

Fig.- 1 is a central vertical section, partly broken away, through anapparatus cone) structed in accordance with and embodying T myinvention, the section being on the dotted Fig. 2 isa horizontal sectionthrough the" line 11 of Fig. 3

same taken on the dotted line 2-2 of Fig. 1;

Fig. 3 is'a' top view of the same, and Fig. 4: is'a' sectional viewthrough a portion off the same on the dotted line 4-4 of Fig. 1, theshell of the tank'being partly broken away.

In the drawings, 10 designates the tank-or u shellof the apparatussubdivided by vert1cal.,partitions 11, 12 into substantially equalcommunicating compartments 13, 14:,

the compartment 13 being an inlet compartment and provided with aninletpipe 15, a

scum pan 16 and a valved drain outlet pipe 17, and the'compartment14:;being provided with a filter 18,-a discharge pipe 19therefrom and avalved drain outlet pipe 20.

The tank 10 will be made of sheetmetal and it has a bottom 21 and'twolarge removable cover plates. 22, 23, respectively, one being overeachcompartment or chamber ofthetankand the provision of which rendersaccess to said compartments or chambers entirely convenient. The tank 10is fitted, for the inlet compartment 13, with gauge glasses 24,25, onebeing wholly below the level of the body of water 26 in saidcompartment, and the other being partly.

below and partly above said level, as shown in 1, and the purpose ofthis arrange- I ment of said glasses being to afford the most accuratereading of the oil condition The tank 10 is also the oil condition ofthe body of water 28 in said compartment and thereby also the con ditionof the 'filtering'material. In the top of the" tank 10 is provided avent29 (Fig;

The partitions 11 12 serve to partly separate the inlet and filtercompartments 13, 14 from each other, and they are parallel with eachother and reasonably close together, a passage 30 being left betweenthem through which the water from the compartment 13 may flow upwardlyand pass over the partition 12 into the compartment 14. The partitions11, 12 are baflie plates and extend entirely across the tank 10, asshown in Fig. 2, and the partition or plate 11 extends downwardly fromthe top of the tank to nearly the bottom thereof, while the partition orplate 12 extends upwardly from the bottom of the tank to about the topof the filter 18 or to the horizontal plane of the water levels in bothcompartments, as shown in Fig. 1.

The inlet pipe extends below the water level in the inlet compartment orchamber 13, and said pipe is connected bypiping 31 (Fig. 2) with thereturn from the heatercoils, not shown, located in the usual oiltanksprovided on a tank-steamship or oilcarrying vessel.

The scum-pan 16 is preferably of V-shape in vertical cross section andextends across the compartment or chamber 13, as shown in Figs. 2 and 4,and is supported at its ends on angle-iron brackets 32 secured to theeasing of the tank 10. The pan 16 has its open top at the water level inthe compartment 13, and said pan is provided at its bottom with outletpipe connections 33 serving as a discharge from said pan to any exteriorlocation that may be determined upon.

Portions of the grease or oil will ascend to the top of the body ofwater in the compartment 13 during all the time that the apparatus is inuse, and this grease or oil due to the continued flow from the pipe 15will pass over the sides of and enter the pan 16 and be carried away bythe discharge pipe connections 33, thus relieving the water from a largepercentage of the grease or oil and preparing the water for furthertreatment by the filter 18. It may be mentioned here that exhaust vapordischarging through the inlet 15 will be condensed in the body of water26.

The additions of water to the compartment or chamber 13 will induce afiow of the water from the bottom of said compartment up through thepassage and over the plate 12 into the compartment 14 within which thewater will be filtered and then find its escape through the outlet pipe19 for use as feed-water or other purpose. The weirplate 12 maintains.the water-level in the compartment 13.

The filter 18 is of special construction adapting it for the purpose ofmy invention and its details will therefore be at once described. Thefilter comprises an exterior cylindrical perforated galvanized steelcontainer 34, an inner slotted or perforated composition cone 35 whichis hollow and covered with fine mesh wire gauze 36 and a bed of cocoanutfibre 37 which fills the container 34 exterior to the cone and possessesa high affinity for oil. The container 34 will preferably be of suchsize that the outer strata of cocoanut fibre therein will equal morethan three hundred times the area of the inlet pipe 15. The wire gauze36 is provided to prevent any of the cocoanut fibre from passing throughthe cone 35 with the filtered water. The cone 35 is bolted to theperforated bottom of the container 34 over a central opening therein andhouses a vertical valve stem 38 which carries on its lower end a valve39 and a coiled spring 40 which exerts a closing force against the valve39 and is confined between said valve and a top housing 41 therefor andthrough which housing the valve stem 38 passes, as shown in Fig. 1. Thefiltered water also passes through the housing 41, which is bolted upona mainhollow housing 42 which afiords a commodious chamber for theflowing filtered water and also for the spring 40, valve39 and seat 43for said valve. The housing 42 communicates with the outlet pipe 19 forfiltered water and which will lead to a reserve tank or reserve tanksfor the water.

The upper end of the container 34 is closed by a perforated disk orplate 44 which is seated on an inner annular flange of a band 45 securedaround the upper edgesof the sides of the container, as shown in Fig. 1,and said disk 44 receives at its center the upwardly projecting end ofthe cone 35 and i is removably clamped down on its seat by a nut 46which engages said cone.

The valve stem 38 projects upwardl above the cone 35 and receives on itsthread ed upper end a handle-nut 47 which engages the upper edge of saidcone and when.

worked downwardly against said edge serves to draw the valve rod or stem38 upwardly and thereby compress the spring 40 and hold the valve 39 inthe open position in which it is shown in Fig. 1. said valve alwaysremaining open during the operation of filtering the water. also firmlyhold the valve 39 on its seat when permitted so to do, as when thehandle-nut 47 is worked upwardly on the upper thread The spring 40 will4 ed end of the valve stem or rod 38 to permit W hen it is I ifnecessary, the cover plate being removed for that purpose. It isdesirable that a spare filter be carried to be installed in thecompartment 14 whenever it should become necessary to remove the filtertherefrom for the refilling of the container or for other purpose. Theprovisionof the large cover plates 22, 23 permits ready assembly of theinterior parts of the compartments 13, 14.

The drain pipes 17, 20 are provided to facilitate the cleaning out ofthe compartments 13, 14.

It is desirable to boil out the filtering material in the container 34when the same becomes foul, and to this end I provide. a steamconnection 48 which enters the chamber of the housing 42 above the valve39. On ceasing the filtering operation, opening the drain pipe 20 andclosing the valve 39, steam may be admitted to the housing 42 andinterior of the cone 35 for boiling out the filtering material, the oilor grease being forced therefrom outwardly through the perforated wallsof the container 34 and finally run 03 through the drain pipe 20.

The compartment 14 is equipped withlargely be understood from thedescription hereinbefore presented. The compartments 13, 14 may beprimarily filled with water tothe proper level or this body of water mayresult from the water of condensation. The exhaust steam fro-m theheater coils in the oil tanks enters the compartment 13 below the waterlevel therein and the plate 11 serves to confine as far as possible theentrained oil or grease to the compartment 13 so that the same mayascend through the water and flow into the scum-pan 16 and be carriedaway through the discharge connections 33. The partly cleansed waterflows over the weir-plate 12 into the compartment 14 and becomesfiltered by passing through the bed of filtering media held by thecontainer or shell 34, said water passing into the cone or equivalennthollow perforated core 35 and flowing thence to the delivery outlet pipe19 for filtered water.

What I claim as my invention and desire to secure by Letters Patent, is

1. Apparatus of the character described comprising a tank containing abody of water, means for adding thereto accumulations of water arisingfrom condensed steam, a hollow housing secured on the bottom of saidtank and affording a valve seat and being connected with the dischargefor filtered water, an upper housing secured on said hollow lowerhousing and affording a guide for a valve-rod, a valve adapted to saidseat, a valve rod extending upwardly from'said valve, a spring on saidrod acting 1 to force the valve to said seat, a filter subsaid valve rodextends and from which the filtered waterissues, an exterior perforatedcontainer having a bottom to which said core is secured and a removabletop plate and a filling of filtering media within said containerexterior to said core, and a nut on the upper end of said rod andengaging the upper end of said core for maintaining the filter on itsseat and said Valve normally open; in opposition to the force of saidsprin 2. pparatus of the character described comprising a tankcontaining a body of water, means for adding thereto accumulations ofwater arising from condensed steam, a hollow housing secured, on thebottom of said tank and affording a valve seat and being connected withthe discharge for filtered water, an upper housing secured on saidhollow lower housing and affording a guide for a valve-rod, a valveadapted to said seat, a valve rod extending upwardly from said valve, aspring on said rod acting to force the valve to said seat, a filtersubmerged in said body of water and seated on said upper housing andcomprising a hollow perforated core up through which said valve rodextends and fro-m which the filtered water issues, an exteriorperforated container having a bottom to which said core is secured and aremovable top plate and a filling of filtering media within saidcontainer exterior to said core, a nut on the upper end ofsaid rod andengaging the upper end of said core for maintaining the filter on itsseat and said valve normally open in opposition to the, force of saidspring, and a nut on the upper end of said core for clamp-ing said topplate on said container.

'llO

3. Apparatus of the character described comprising a tank containing abody of water, means for adding thereto accumulations of water arisingfrom condensed steam, a hollow housing secured on the bottom of saidtankand affording a valve-seat and being connected with the dischargefor filtered water, an upper housing secured on said hollow lowerhousing and affording a guide for a valve-rod, a valve adapted to saidseat, a valve rod extending upwardly from said valve, a spring on saidrod acting to force the valve to said seat, a filter submerged in saidbody of water and seated on said upper housing and comprising a hollowperforated core up through which said valve rod extends and from whichthe filtered water issues, an exterior perforated container having abottom to which said core is secured and a removable top plate and afilling of filtering media Within said confor use in boiling out thefiltering media tainer exterior to said core, a nut on the Whendesiredand when said valve is closed. upper end of said rod and engagingthe Signed at New York city, in the county 10 upper end of said core formaintaining the of New York and State of New York, this filter on itsseat and said Valve normally 7th day of September, A. D. 1920.

open in Opposition to the force of said spring, and a steam inlet tosaid housing 7 HOWARD C. DAVIS.

